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Method for treating organic sewage and co-producing hydrogen

A technology for organic sewage and wastewater, applied in biological water/sewage treatment, water/sludge/sewage treatment, sludge treatment, etc., can solve the problem of low reaction rate, reduce the cost of hydrogen production, and reduce the energy consumption of hydrogen production , Improve the efficiency of hydrogen production

Inactive Publication Date: 2019-11-29
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention solves the problem that the traditional fermentation hydrogen production technology can only incompletely decompose the organic matter contained in the waste water, resulting in a too low reaction rate, and creates a new method for producing hydrogen at an extremely low voltage and treating organic waste water, greatly Reduce the cost of hydrogen production while improving the efficiency of hydrogen production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] (1) Take the anaerobic granular sludge in the secondary sedimentation tank of the sewage biological treatment system of the sewage treatment plant and treat it with microwave for 5 minutes to prepare the inoculum;

[0019] (2) Using waste water from food processing plants (with a nitrogen content of 2400 mg / L) as the nitrogen source and paper mill waste water (with a phosphorus content of 456 mg / L) as the phosphorus source, the COD concentration of paper mill sewage with a COD concentration of 15000 mg / L COD:N:P adjusted to 300:5:1;

[0020] (3) Add inoculum to the adjusted organic sewage, the addition amount is 10% of the sewage quality of the paper mill, and at the same time, add electroactive microorganisms, the addition amount is 15% of the sewage quality of the paper mill, and seal; the electroactive microorganisms are mature The reaction solution in the microbial fuel cell, the mature microbial fuel cell is placed in a single-chamber reactor with a cathode and an ...

Embodiment 2

[0023] (1) Take the anaerobic granular sludge in the secondary sedimentation tank of the sewage biological treatment system of the sewage treatment plant and treat it with microwave for 8 minutes to prepare the inoculum;

[0024] (2) Using slaughter processing wastewater (nitrogen content 4700 mg / L) as nitrogen source and paper mill wastewater (phosphorus content 523 mg / L) as phosphorus source, the COD:N of leather wastewater with a COD concentration of 17500 mg / L: P is adjusted to 400:8:2;

[0025] (3) Add inoculum to the adjusted organic sewage, the addition amount is 15% of the sewage quality of the paper mill, and at the same time, add electroactive microorganisms, the addition amount is 20% of the sewage quality of the paper mill, and seal; the electroactive microorganisms are mature The reaction solution in the microbial fuel cell, the mature microbial fuel cell is placed in a single-chamber reactor with a cathode and an anode, and the activated sludge from the secondary...

Embodiment 3

[0028] (1) Take the anaerobic granular sludge in the secondary sedimentation tank of the sewage biological treatment system of the sewage treatment plant and treat it with microwave for 14 minutes to prepare the inoculum;

[0029](2) Using sugar wastewater (nitrogen content 5800 mg / L) as nitrogen source and paper mill wastewater (phosphorus content 478 mg / L) as phosphorus source, the COD:N of leather wastewater with a COD concentration of 12500 mg / L: P is adjusted to 500:10:3;

[0030] (3) Add inoculum to the adjusted organic sewage, the addition amount is 20% of the sewage quality of the paper mill, and at the same time, add electroactive microorganisms, the addition amount is 10% of the sewage quality of the paper mill, and seal; the electroactive microorganisms are mature The reaction solution in the microbial fuel cell, the mature microbial fuel cell is placed in a single-chamber reactor with a cathode and an anode, and the activated sludge from the secondary sedimentation...

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Abstract

The invention discloses a method for treating organic sewage and co-producing hydrogen, and the method comprises the following steps: performing microwave treatment on anaerobic granular sludge to prepare inocula; adjusting the COD: N: P of the organic sewage to be treated to be (300-500): (5-10): (1-3); adding the inocula into the adjusted organic sewage according to an addition amount of 10-20%of the mass of the organic sewage, adding electroactive microorganisms according to an addition amount of 10-20% of the mass of the organic sewage, and sealing; and carrying out anaerobic fermentationunder the conditions of nitrogen, applied voltage, pH value of 5.5-6.0 and temperature of 35-40 DEG C, and collecting a fermentation product. The problems that traditional fermentation hydrogen production is low in efficiency and incomplete in end product reaction are solved, the organic sewage can stably and efficiently produce the hydrogen under the extremely-low voltage condition through the action of the microorganisms, and energy consumption in the field of traditional water electrolysis hydrogen production is greatly reduced, and resourceful treatment of wastes is realized.

Description

technical field [0001] The invention relates to a treatment technology for organic sewage treatment, in particular to a method for treating and degrading organic sewage by using an electrochemical method and co-producing hydrogen at the same time. Background technique [0002] With the rapid depletion of high-carbon energy sources such as coal and petroleum that humans rely on, and the unrestrained use of high-carbon energy sources also causes a large amount of toxic and harmful gases to enter the environment, leading to the formation of acid rain and the greenhouse effect, which seriously threatens the development of human society. To deal with these problems, the development of new energy and renewable energy has received more and more attention. Hydrogen, as an efficient, clean and pollution-free secondary energy, is regarded as the most ideal energy carrier. Hydrogen production by electrolysis of water has been widely used due to the characteristics of simple equipment, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/34C02F3/00C02F3/28C02F11/00C12P3/00C02F103/22C02F103/30C02F103/32C02F103/34
CPCC02F3/34C02F3/005C02F3/28C02F11/00C02F11/004C12P3/00C02F2103/30C02F2103/34C02F2103/22C02F2103/32
Inventor 瞿广飞邓继加李军燕宁平解若松赵驰
Owner KUNMING UNIV OF SCI & TECH
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